Getting the HVAC system right on a new home starts at the design stage — not after the walls are up. Macdonald Mechanical provides full-scope new construction HVAC services for homeowners and builders across Kelowna, West Kelowna, Lake Country, Peachland, Summerland, Penticton, Vernon, and the surrounding Okanagan — from initial heat loss and gain calculations right through to installation and commissioning.
If you are building your dream home in the Okanagan, the HVAC system is one of the most important decisions you will make — and one of the most commonly underplanned. We work directly with you and your builder from the earliest stages to design a system that keeps your home comfortable year-round, meets BC Energy Step Code requirements, and maximizes any rebates you may qualify for.
We are a reliable HVAC partner for residential builders and developers working on new construction projects across the Okanagan. We deliver the documentation, calculations, and installations your projects require — including CSA F280 reports and commissioning sheets needed for FortisBC New Home Program applications.
A properly designed HVAC system starts long before the equipment arrives on site. Here is how we approach every new construction project:
We perform a full CSA F280 room-by-room heat loss and heat gain calculation to determine exactly what your home needs — not a rough estimate.
We recommend the right equipment for your home's design, energy goals, and budget — and advise on what qualifies for available rebates.
We install the full HVAC system — whether a heat pump, furnace, HRV, or a combination — coordinated with your builder's construction timeline.
We test and commission the completed system, verify it matches the design calculations, and provide all documentation required for rebate applications.
The CSA F280 standard (Heat Loss and Heat Gain for Residential Buildings) is the Canadian engineering benchmark for sizing residential HVAC systems. A room-by-room CSA F280 calculation ensures your system is designed for your specific home — not a generic estimate based on square footage alone.
It is also a requirement for the FortisBC New Home Program rebate application. Macdonald Mechanical is TECA certified and performs CSA F280 calculations as part of every new construction project.
New homes built to BC Energy Step Code Step 4 or Step 5 using high-efficiency equipment can qualify for substantial rebates through the FortisBC New Home Program. These are among the largest HVAC rebates available in BC.
Minimum $15,800 per dwelling unit in rebates for qualifying new homes built to BC Energy Step Code Step 4.
Enhanced rebates available for homes achieving Step 5 — the highest energy performance tier of the BC Energy Step Code.
Qualifying homes must use high-efficiency heating equipment such as heat pumps. CSA F280 calculations and HVAC commissioning documentation are required as part of the application. Learn more at FortisBC ›
We take on new construction HVAC projects throughout the Okanagan. If you are unsure whether we serve your area, give us a call.
A CSA F280 calculation is a room-by-room engineering calculation that determines exactly how much heating and cooling your home requires, based on its size, insulation levels, window area, orientation, and local climate. It is the Canadian standard for HVAC system design and is required for the FortisBC New Home Program rebates. Without it, your system may be improperly sized — leading to comfort issues, poor efficiency, and premature equipment failure.
Yes. The FortisBC New Home Program offers significant rebates for new homes built to BC Energy Step Code Step 4 or Step 5. Rebates start at $15,800 per dwelling unit for Step 4 homes. Qualifying homes must use high-efficiency equipment such as heat pumps, and CSA F280 calculations are required as part of the application.
Both. We work directly with homeowners building a custom home, as well as builders and developers who need a reliable HVAC partner for residential new construction projects in the Okanagan.
We handle the full scope — from initial design and CSA F280 heat loss and gain calculations, to equipment selection, installation, and final commissioning. We work with your builder and energy advisor from the earliest stages of the project to ensure the HVAC system is designed correctly for the home.
We serve new construction projects throughout the Okanagan, including Kelowna, West Kelowna, Lake Country, Peachland, Summerland, Penticton, Vernon, and surrounding communities.
Get in touch early — the sooner we are involved in your project, the better the outcome. We'll design the right system for your home, maximise your rebates, and handle everything from start to finish.